<!-- Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/ -->
<!doctype html>
<html>
  <head>
    <meta charset="utf-8"/>
    <title>Debugger test page</title>
  </head>

  <body>
    <button>Click me!</button>
    <input type="text" onchange="changeHandler()">

    <script type="text/javascript">
      window.addEventListener("load", function onload() {
        window.removeEventListener("load", onload);
        function initialSetup(event) {
          debugger;
          var button = document.querySelector("button");
          button.onclick = clickHandler;
        }
        function clickHandler(event) {
          window.foobar = "clickHandler";
        }
        function changeHandler(event) {
          window.foobar = "changeHandler";
        }
        function keyupHandler(event) {
          window.foobar = "keyupHandler";
        }
        function keydownHandler(event) {
          window.foobar = "keydownHandler";
        }

        var button = document.querySelector("button");
        button.onclick = initialSetup;

        var input = document.querySelector("input");
        input.addEventListener("keyup", keyupHandler, true);

        window.addEventListener("keydown", keydownHandler, true);
        document.body.addEventListener("keydown", keydownHandler, true);

        window.changeHandler = changeHandler;
      });

      function addBodyClickEventListener() {
        document.body.addEventListener("click", function() { debugger; });
      }
    </script>
  </body>

</html>
